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path: root/main/exiv2/CVE-2019-17402.patch
blob: 45451442d5f10ccdaa5364ef461bbe8252760a10 (plain) (blame)
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diff --git a/src/crwimage_int.cpp b/src/crwimage_int.cpp
index 29311fd..c0d9553 100644
--- a/src/crwimage_int.cpp
+++ b/src/crwimage_int.cpp
@@ -268,6 +268,9 @@ namespace Exiv2 {
 #ifdef EXIV2_DEBUG_MESSAGES
         std::cout << "Reading directory 0x" << std::hex << tag() << "\n";
 #endif
+        if (this->offset() + this->size() > size)
+            throw Error(kerOffsetOutOfRange);
+
         readDirectory(pData + offset(), this->size(), byteOrder);
 #ifdef EXIV2_DEBUG_MESSAGES
         std::cout << "<---- 0x" << std::hex << tag() << "\n";
diff --git a/test/data/POC-file_issue_1019 b/test/data/POC-file_issue_1019
new file mode 100755
index 0000000..e69de29
diff --git a/tests/bugfixes/github/test_issue_1019.py b/tests/bugfixes/github/test_issue_1019.py
new file mode 100644
index 0000000..c2682f9
--- /dev/null
+++ b/tests/bugfixes/github/test_issue_1019.py
@@ -0,0 +1,14 @@
+from system_tests import CaseMeta, path
+
+
+class OverreadInCiffDirectoryReadDirectory(metaclass=CaseMeta):
+
+    filename = path("$data_path/POC-file_issue_1019")
+    commands = ["$exiv2 -pv $filename"]
+    stdout = [""]
+    stderr = [
+        """$exiv2_exception_message $filename:
+$kerOffsetOutOfRange
+"""
+    ]
+    retval = [1]
diff --git a/tests/suite.conf b/tests/suite.conf
index 5b31930..dab7427 100644
--- a/tests/suite.conf
+++ b/tests/suite.conf
@@ -19,6 +19,7 @@ largeiptc_test: ${ENV:exiv2_path}/largeiptc-test${ENV:binary_extension}
 easyaccess_test: ${ENV:exiv2_path}/easyaccess-test${ENV:binary_extension}
 
 [variables]
+kerOffsetOutOfRange: Offset out of range
 kerFailedToReadImageData: Failed to read image data
 kerCorruptedMetadata: corrupted image metadata
 kerInvalidMalloc: invalid memory allocation request